Function TestLogLineParse_separators

logline_test.go:13–70

This tests ensure parse does not crash when it meets a log line with too many separators.

(t *testing.T)

// This tests ensure parse does not crash when it meets a log line
// with too many separators.
func TestLogLineParse_separators(t *testing.T) {
	// Logline can has maximum 3000 fields and 3000 separator.
	maxSeparators := int(LogLineNumFields)
	tests := []struct {
		name  string
		nseps int
		reset bool // Whether the line should be zeroed out after parse.
	}{
		{
			name:  "empty",
			nseps: 0,
			reset: true,
		},
		{
			name:  "1-separator",
			nseps: 1,
			reset: false,
		},
		{
			name:  "max-minus-1-separators",
			nseps: maxSeparators - 1,
			reset: false,
		},
		{
			name:  "max-separators",
			nseps: maxSeparators,
			reset: false,
		},
		{
			name:  "more-than-max-separators",
			nseps: maxSeparators + 1,
			reset: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			defer func() {
				if r := recover(); r != nil {
					t.Errorf("!!ALERT!! got panic in Parse: %v", r)
				}
			}()

			b := bytes.Buffer{}
			for i := 0; i < tt.nseps; i++ {
				b.WriteByte(DefaultLogLineFieldSeparator)
			}
			ll := LogLine{FieldSeparator: DefaultLogLineFieldSeparator}
			ll.Parse(b.Bytes(), nil)

			if tt.reset && ll.data != nil {
				t.Errorf("log line not zeroed out but it should")
			}
			if !tt.reset && ll.data == nil {
				t.Errorf("log line got zeroed out but it shouldn't")
			}
		})
	}
}